A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5998-01-446-7043
NSN 7035-01-464-1213
NSN 5920-01-339-3977
NSN 6105-01-055-7436
NSN 6130-01-067-1771
NSN 6685-01-070-8888
NSN 5855-01-543-4274
NSN 6685-01-301-4835
NSN 5855-01-223-0833
NSN 6645-01-594-1439
NSN 6685-01-114-9919
NSN 6150-01-466-8737